Where do i find a power connection for a new hdd

[Guest]

Hello, i want another hdd, i understand i need a sata lead but have no power lead connector?

 

[Guest]

what do i do to power the new hdd?

 

[Guest]

for info i have an AMD PHENOM II X4 ,ASROCK K10N78 BOARD, 8GB RAM, thanks for any response.